"""The installed wheel on the oldest Python it promises (3.9), with nothing
else installed: the standard library and the package alone.

    python -I tests/smoke.py

Prints one line per check and exits non-zero on the first that fails.
"""

import json
import sys
import tempfile
import xml.etree.ElementTree as ET

import wai_quantum as wq
from wai_quantum import widgets

BELL = "OPENQASM 3.0; qubit[2] q; bit[2] c; h q[0]; cx q[0], q[1]; c = measure q;"


def main():
    print("python", sys.version.split()[0], "wai_quantum", wq.__version__)
    demo = wq.Key.demo()
    job = wq.run(BELL, shots=1000, seed=7, key=demo)
    assert job.method == "stabilizer" and job.accuracy == "exact" and set(job.counts) <= {"00", "11"}, job.summary()
    assert wq.verify(json.loads(json.dumps(job))).valid
    print("run and verify:", job.summary())
    forged = json.loads(json.dumps(job))
    forged["result"]["counts"]["00"] += 1
    assert not wq.verify(forged)
    print("a forged result does not verify")
    assert ET.fromstring(wq.draw(BELL, format="svg")).tag.endswith("svg")
    assert wq.equivalent("qubit[1] q; h q[0]; h q[0];", "qubit[1] q;")["verdict"] == "equivalent"
    b = wq.bloch("OPENQASM 3.0; qubit[1] q; h q[0];", key=demo)
    assert abs(b["qubits"][0]["x"] - 1) < 1e-12
    print("draw, equivalent and bloch: ok")
    with tempfile.TemporaryDirectory() as d:
        import os

        os.environ["XDG_CONFIG_HOME"] = d
        k = wq.Key.user()
        assert wq.verify(wq.run(BELL, shots=10)).key == k.public_key
    print("the user's key: made and signed with")
    assert not widgets.HAVE_WIDGETS, "this check runs with the package alone"
    html = wq.Result(job)._repr_html_() + wq.Circuit(BELL)._repr_html_() + wq.Receipt(job)._repr_html_()
    assert "verified" in html and "<svg" in html
    print("the widgets' static fallbacks render without their library")
    s = wq.Service("http://127.0.0.1:9/quantum-jobs/v1", timeout=1)
    try:
        s.describe()
    except wq.ServiceError as e:
        assert e.status is None
    print("the service client: an unreachable service is a ServiceError;", wq.USER_AGENT)
    print("smoke: every check passed")


if __name__ == "__main__":
    main()